It’s the 140th specimen of the week! That’s nearly three years of weekly Grant Museum specimen goodness! In order to celebrate this sort of milestone, and following on from Stacy’s worm theme, this week’s specimen is (probably) the oldest specimen in the Grant Museum. With a little further ado, representing deep time and a group of animals that despite their name aren’t particularly sexy, bordering on underwhelming (that’s the other blog series- Ed.). This week’s specimen of the week is…